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Slime Boss
Slime Island boss
Sea 2 Unlock · Map Piece Drop
This boss can drop Map Piece #5 toward the Sea 2 unlock quest.
- Random drop — expect multiple kills per piece.
- Luck stat does not affect Map Piece drops — build for damage instead.
- Open-world kills only — Boss Rush, Infinite Tower, and Dungeon kills do not count.
Other bosses that can drop Map #5: Aizen, Rimuru
Rimuru is a boss in Sailor Piece with 200M-3.5B HP. Defeating it can drop the Demon Lord title at a 0.9-1.35% rate with a pity counter of 150 kills.
Sea 2 Unlock · Map Piece Drop
This boss can drop Map Piece #5 toward the Sea 2 unlock quest.
- Random drop — expect multiple kills per piece.
- Luck does not affect Map Piece drops — build for damage instead.
- Open-world kills only — Boss Rush, Infinite Tower, and Dungeon kills do not count.
Other bosses that can drop Map #5: Aizen, Rimuru.
Map Piece Tracker →How Map Pieces work →Drops
Every item Rimuru can drop, linked to its full wiki page.
| Item | Drop Rate |
|---|---|
| Sage Pulse | 13.5%-22.5% |
| Tempest Seal | 5.5%-7.5% |
| Slime Remnant | 1.75%-2.8% |
| Slime Wings | 1.25%-2% |
| Slime Core | 0.55%-0.8% |
Title Drop
The Demon Lord title drops at 0.9-1.35% with a guaranteed pity at 150 kills.
What These Drops Are Used For
- Materials for the Rimuru sword
Related Pages

Slime Boss
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